#include <stdio.h>
#define MAX_SIZE    100

int main()
{
    char ch_array[MAX_SIZE];
    int i = 0;

    while( (ch_array[i] = getchar()) != EOF && ch_array[i] != '\n')
    {
        if( ch_array[i] >= 65 && ch_array[i] <= 90 )
        {
            ch_array[i] += 32;
        }
        i++;
    }
    printf("%s",ch_array);

    return 0;
}
